Most scientists now agree that climate change is a critical and urgent issue for humanity and in our personal lives; many of us will already have made changes, whether large or small to tackle this issue. In September 2021, more than 200 health journals worldwide (including the British Medical Journal and The Lancet) published an editorial calling on leaders to take emergency action on climate change and to protect health.^{1, 2} Within the editorial they acknowledged that health professionals must ‘join in the work to achieve environmentally sustainable health systems’ and recognise that this will mean in our professional life we will also have to make modifications including changing clinical practice.

This year, following on from policy and legislation,^3-6 the National Health Service (NHS) Wales launched a Decarbonisation Strategic Delivery Plan (2021) which sets out a framework to meet NHS Wales Net Zero target for 2030 (Figure 1).⁷ The framework sets out three phases to deliver decarbonisation: “Moving up a gear” (2020–2022), “Well On Our Way” (2022–2026) and “Achieving our goal” (2026–2030). In order to ‘move up a gear’ the Welsh Optometric Committee made a Declaration of Climate Emergency, and a survey was launched to try and understand where we are now.

大多数科学家现在都同意气候变化是人类和我们个人生活中的一个关键和紧迫的问题；我们中的许多人已经做出了改变，无论是大是小，以解决这个问题。2021年9月，全球200多家健康期刊（包括《英国医学杂志》和《柳叶刀》）发表社论呼吁各国领导人对气候变化采取紧急行动，保护健康。^{1, 2} 在社论中，他们承认卫生专业人员必须“参与工作以实现环境可持续的卫生系统”，并认识到这将意味着在我们的职业生涯中，我们还必须进行修改，包括改变临床实践。

今年，根据政策和立法，^3-6威尔士国家医疗服务体系 (NHS) 启动了脱碳战略交付计划（2021 年），该计划制定了一个框架，以实现 2030 年 NHS 威尔士净零目标（图 1）。⁷ 该框架规定了实现脱碳的三个阶段：“加快步伐”（2020-2022 年）、“一路走好”（2022-2026 年）和“实现我们的目标”（2026-2030 年）。为了“提高档次”，威尔士验光委员会发表了气候紧急情况宣言，并发起了一项调查，试图了解我们现在所处的位置。